# num = 3
# def fun():
#     num = 5
#     print('5',num)
# fun()
# print('3',num)

# num = 5
# def fun():
#     global num
#     num += 1
#     print('5',num)
# fun()
# print('4',num)

# def outer():
#     num = 1
#     def inner():
#         nonlocal num
#         num = 2
#         print('4',num)
#     inner()
#     print('5',num)
# outer()


# stu = [{'num': '201801','name': '王五', 'score': 89},
#     {'num': '201802', 'name': '刘军', 'score': 95},
#     {'num': '201803', 'name': '李梦', 'score': 85}]
# stu.sort(key=lambda x: x['score'])
# for s in stu:
#     print('学号：',s['num'],'姓名:',s['name'],'成绩:',s['score'])